American Red Valve's Roller Pinch Valve which has patented sleeve, is widely used in corrosive chemicals, lime, mining slurry with precise, repeatable control.

美国红阀系列中的胶管阀采用专利的弹性套管设计，以其精确的、 重复性高的控制特点，广泛应用在腐蚀性化学品、 石灰、 矿物泥浆等生产领域。

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The system uses the simplest axial-flow sleeve as flow control valve to blank off, isolate and select reservoir. The system adopts all-hydraulic operation.

本系统使用最简单的轴流类滑套作为流量控制阀，用以封堵、隔离和选择油层，并采用全液压方式进行动作控制。

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